/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */


package net.sf.freecol.common.model;


/**
 * Interface for classes which listen to transactions in market
 */
public interface TransactionListener
{

    /**
     * Logs a purchase
     *
     * @param goodsType The type of goods which have been purchased
     * @param amount The amount of goods which have been purchased
     * @param price The unit price of the goods
     */
    public void logPurchase( GoodsType goodsType, int amount, int price );

    /**
     * Logs a sale
     *
     * @param goodsType The type of goods which have been sold
     * @param amount The amount of goods which have been sold
     * @param price The unit price of the goods
     * @param tax The tax which has been applied
     */
    public void logSale( GoodsType goodsType, int amount, int price, int tax );
}
